Ronald Fisher, an English statistician (18901962), collected measurements for a sample of 150 irises. Of concern were
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a. Is there a significant difference in the mean petal width for the three species? Use a 0.05 level of significance.
b. Is there a significant difference in the mean sepal width for the three species? Use a 0.05 level of significance.
c. How could Fisher use these outcomes to help him classify irises into the correct species?
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